Position detection mechanism for grinding and polishing head

Abstract

The utility model relates to the technical field of grinding and polishing machines, in particular to a grinding and polishing head position detection mechanism, which comprises a swing frame body rotatably sleeved on the top of a support vertical arm, a control panel and a sensor triggered by a sector plate, the sensor is horizontally arranged on the swing frame body, and the sector plate is coaxially arranged on the support vertical arm; a button switch and two indicating lamps are arranged on the control panel; the control panel is arranged at the front end of the lifting part; the sector plate is used for ensuring that the lifting part is positioned above the inner side of the millstone; when the sensor is triggered, the corresponding indicating lamp is lightened. Through the sector plate, the sensor, the control panel and the indicator lamp, the positions of the grinding and polishing head relative to different millstones can be detected and displayed through the indicator lamp, and the swing grinding process of a sample piece in a metallographic experiment is guaranteed through position detection relative to a single millstone.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding and polishing machines, in particular to a grinding and polishing head position detection mechanism. Background Art

[0002] Grinding and polishing machines are used in many industries. They are often used to prepare metal samples, polymer samples, ceramic samples or similar samples for further experiments, such as metallographic experiments. It is known that existing grinding and polishing machines include two independent grinding and polishing stations; a supporting arm is arranged on one side of the grinding and polishing station, a rotatable head is arranged on the supporting arm, and a lifting part is arranged on the head; a grinding and polishing head that is movably mounted on the sample is arranged at the lower end of the lifting part.

[0003] However, for metallographic experiments, the sample needs to be intermittently swung and ground on a grinding disc during the grinding process to ensure that the metallographic structure can be ground in place and to facilitate observation of the metallographic structure under a microscope. If the grinding and polishing head rotates to the outside of the grinding disc and starts to descend for grinding, it is easy to cause damage to the equipment. Therefore, the above-mentioned existing grinding and polishing machine needs to be modified to detect the swing position of the grinding and polishing head. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and shortcomings in the prior art. To this end, the utility model provides a grinding and polishing head position detection mechanism, which can detect and prompt the position of the grinding and polishing head and can also detect the swing position of the grinding and polishing head on a single grinding disc.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a grinding and polishing head position detection mechanism, including a swing frame rotatably mounted on the top of a supporting arm, which also includes a control panel and a sensor triggered by a fan-shaped plate, wherein the sensor is horizontally arranged on the swing frame, and the fan-shaped plate is coaxially arranged on the supporting arm; a button switch and an indicator light are provided on the control panel; the control panel is arranged at the front end of the lifting part; the fan-shaped plate is used to ensure that the lifting part is located above the inner side of the grinding disc; when the sensor is triggered, the indicator light lights up.

[0006] Furthermore, the swing frame is provided with a locking assembly driven by a driving assembly; the locking assembly includes a pressing plate, the pressing plate is provided with a plurality of locking shafts, and the plurality of locking shafts are distributed on both sides of the supporting arm; the locking shaft is provided with a chamfer for locking the supporting arm; the button switch is used to control the driving assembly.

[0007] Furthermore, the driving assembly includes a rear cover sealingly bolted to the swing frame, an expandable sealing gasket being sealed and clamped between the rear cover and the swing frame; a pressure chamber is provided between the sealing gasket and the rear cover; the pressure chamber is connected to an external air source via a two-position three-way solenoid valve; and the two-position three-way solenoid valve is electrically connected to the button switch.

[0008] Furthermore, the sensor is bolted to the swing frame through a U-shaped connecting plate.

[0009] Furthermore, a retaining ring is coaxially provided on the supporting arm, and the retaining ring is located at the lower end of the swing frame; the sector plate and the retaining ring are integrated.

[0010] Furthermore, the sealing pad is a plastic pad.

[0011] Furthermore, the number of the locking shafts is three, and the three locking shafts are distributed in a triangle.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the position of the grinding and polishing head relative to the grinding disc can be detected by the fan-shaped plate and the sensor and displayed by the indicator light. The grinding and polishing head can be locked in the corresponding working position by the locking assembly. The overall position detection of the grinding and polishing head relative to different grinding discs and relative to a single grinding disc is ensured, the swing grinding process of the sample in the metallographic experiment is ensured, and the grinding quality of the sample is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 for Figure 1 Partial side view of .

[0015] Figure 3 It is a cross-sectional view of the position of the swing frame in the utility model.

[0016] Figure 4 It is an exploded view of the swing frame in the utility model.

[0017] Figure 5 This is a control principle block diagram of the utility model.

[0018] Figure 6 This is a first usage state diagram of the utility model.

[0019] Figure 7 This is a second usage state diagram of the utility model.

[0020] Figure 8 This is a third usage state diagram of the utility model.

[0021] Among them: 1. Support arm; 2. Swing frame; 3. U-shaped connecting plate; 4. Control panel; 5. Push button switch; 6. Indicator light; 7. Retaining ring; 21. Pressure plate; 22. Locking shaft; 23. Back cover; 24. Sealing gasket; 25. Pressure chamber; 26. Two-position three-way solenoid valve; 31. Sensor; 71. Fan plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present utility model, it needs to be understood that, according to the background technology, the supporting arm 1 is fixed on the base, the swing frame 2 can be rotatably mounted on the top of the supporting arm 1, the swing frame 2 is used to connect the lifting part, and the control panel 4 is used to control the rotation of the grinding disc A and the grinding disc B and the lifting and lowering of the lifting part, and the details will not be repeated. Example

[0025] See also Figures 1 to 8The utility model provides a grinding and polishing head position detection mechanism, including a control panel 4 and sensors A31 and B32 triggered by a fan-shaped plate 71, wherein the sensors A31 and B32 are both horizontally arranged on the swing frame 2, and the fan-shaped plate 71 is coaxially arranged on the supporting arm 1; a button switch 5 and two indicator lights 6 are arranged on the control panel 4; the control panel 4 is arranged at the front end of the lifting part; the fan-shaped plate 71 is used to ensure that the lifting part is located above the inner side of the grinding disc; when the sensors A31 and B32 are triggered, the corresponding indicator lights 6 light up, and the corresponding grinding disc starts; at the same time, a locking assembly driven by a driving assembly is arranged in the swing frame 2; the locking assembly includes a pressing plate 21, and a plurality of locking shafts 22 are arranged on the pressing plate 21, and these locking shafts 22 are distributed on both sides of the supporting arm 1; the locking shaft 22 is provided with a chamfer for locking the supporting arm 1; the button switch 5 is used to control the driving assembly; the locking assembly can prevent the swing frame 2 from continuing to swing after the grinding disc is started, thereby ensuring the accuracy of the grinding and polishing head position.

[0026] The number of the locking shafts 22 is preferably three, and the three locking shafts 22 are distributed on both sides of the supporting arm 1 in a triangle shape.

[0027] Preferably, the sensor 31 is bolted to the swing frame 2 via a U-shaped connecting plate 3 .

[0028] As an embodiment of the utility model, the driving assembly includes a rear cover 23 sealingly bolted to the swing frame 2, an expandable sealing gasket 24 is sealingly clamped between the rear cover 23 and the swing frame 2; a pressure chamber 25 is provided between the sealing gasket 24 and the rear cover 23; the pressure chamber 25 is connected to an external air source through a two-position three-way solenoid valve 26; the two-position three-way solenoid valve 26 is electrically connected to the button switch 5.

[0029] Preferably, the sealing pad 24 is a plastic pad.

[0030] By inflating air into the pressure chamber 25 , the sealing pad 24 expands and pushes the pressing plate 21 to move, and the pressing plate 21 drives the locking shaft 22 to move toward the supporting arm 1 to complete the locking process of the swing frame 2 .

[0031] As an embodiment of the utility model, a retaining ring 7 is coaxially provided on the supporting arm 1 , and the retaining ring 7 is located at the lower end of the swing frame 2 ; the sector plate 71 and the retaining ring 7 are integrated.

[0032] The retaining ring 7 here can be welded to the supporting arm 1, or bolted to the supporting arm 1 by screws, and the details are not repeated here.

[0033] The working process of this utility model:

[0034] Process 1: Figure 6 As shown, for a grinding disc:

[0035] The two-position three-way solenoid valve 26 is controlled by the button switch 5, so that the pressure chamber 25 is in a deflated state. At this time, the swing frame 2 rotates. When the sensor A31 is triggered by the fan plate 71 for the first time, the lifting part descends and the grinding disc starts. At this time, the corresponding indicator light 6 lights up; the two-position three-way solenoid valve 26 is controlled by the button switch 5, so that the pressure chamber 25 is in an inflated state, and the sealing gasket 24 expands to push the pressure plate 21 and the locking shaft 22. The chamfer on the locking shaft 22 contacts the supporting arm 1 to complete the locking of the swing frame 2. After the sample is ground for a certain period of time, the above process is repeated, the swing angle is changed and the grinding is continued. Within the arc angle range of the fan plate 71, the grinding and polishing head is always directly above the inner side of the grinding disc.

[0036] Process 2: Figure 1 and Figure 7 As shown, for two grinding discs:

[0037] The sensor 31 and the indicator light 6 correspond to one group, and the number is 2 groups. The fan-shaped plate 71 can trigger the corresponding sensor 31 as it rotates. Specifically, if the indicator light 6 corresponding to one group of sensors 31 is on, and the indicator light 6 corresponding to the other group of sensors 31 is not on, the grinding and polishing head is above the grinding disc where the indicator light 6 is on and can swing, and then the grinding is completed according to the above process one; if both indicator lights 6 are off, the grinding and polishing head is in the non-working position of the grinding disc, and the grinding and polishing head cannot be lowered; by detecting the position of the grinding and polishing head, it can prevent the grinding and polishing head from falling at will and damaging the equipment.

[0038] Process 3: Figure 8 As shown, for three grinding discs:

[0039] The sensor 31 and the indicator light 6 correspond to one group, and the number is 3 groups. If the indicator light 6 corresponding to one group of sensors 31 is on, and the other indicator lights 6 are not on, the grinding and polishing head is above the grinding disc where the indicator light 6 is on and can swing, and then the grinding is completed according to the above process one. If the three indicator lights 6 are not on, the grinding and polishing head is in the non-working position of the grinding disc and cannot be lowered. The details are not repeated here.

[0040] By analogy, the utility model can select corresponding sensors 31 and indicator lights 6 according to the number of grinding discs. Through the cooperation of the fan-shaped plate 71, the sensor 31, the locking assembly and the indicator light 6, the position detection of the grinding and polishing head relative to multiple grinding discs and whether the position of a single grinding disc is above the inner side of the corresponding grinding disc can be realized.

[0041] The utility model can be summarized in other specific forms that do not violate the spirit or main features of the utility model. Therefore, no matter from which point of view, the above embodiments of the utility model can only be regarded as an explanation of the utility model and cannot limit the utility model. The claims indicate the scope of the utility model, while the above description does not indicate the scope of the utility model. Therefore, any changes within the meaning and scope equivalent to the claims of the utility model should be considered to be included in the scope of the claims of the utility model.

Claims

1. A grinding and polishing head position detection mechanism, comprising a swing frame (2) rotatably mounted on the top of a supporting arm (1), characterized in that: It also comprises a control panel (4) and a sensor (31) triggered by a fan-shaped plate (71), wherein the sensor (31) is horizontally arranged on the swing frame (2), and the fan-shaped plate (71) is coaxially arranged on the supporting arm (1); a button switch (5) and an indicator light (6) are arranged on the control panel (4); the control panel (4) is arranged at the front end of the lifting part; the fan-shaped plate (71) is used to ensure that the lifting part is located above the inner side of the grinding disc; when the sensor (31) is triggered, the indicator light (6) lights up.

2. The grinding and polishing head position detection mechanism according to claim 1, characterized in that: A locking assembly driven by a driving assembly is provided in the swing frame (2); the locking assembly comprises a pressing plate (21), a plurality of locking shafts (22) are provided on the pressing plate (21), and the plurality of locking shafts (22) are distributed on both sides of the supporting arm (1); a chamfer is provided on the locking shaft (22) for locking the supporting arm (1); and the button switch (5) is used to control the driving assembly.

3. The grinding and polishing head position detection mechanism according to claim 2, characterized in that: The driving assembly comprises a rear cover (23) sealingly bolted to the swing frame (2); an expandable sealing pad (24) is sealed and clamped between the rear cover (23) and the swing frame (2); a pressure chamber (25) is provided between the sealing pad (24) and the rear cover (23); the pressure chamber (25) is communicated with an external air source via a two-position three-way solenoid valve (26); and the two-position three-way solenoid valve (26) is electrically connected to the button switch (5).

4. The grinding and polishing head position detection mechanism according to claim 3, characterized in that: The sensor (31) is bolted to the swing frame (2) via a U-shaped connecting plate (3).

5. The grinding and polishing head position detection mechanism according to claim 3, characterized in that: A retaining ring (7) is coaxially disposed on the supporting arm (1), and the retaining ring (7) is located at the lower end of the swing frame (2); the sector plate (71) and the retaining ring (7) are integrally formed.

6. The grinding and polishing head position detection mechanism according to claim 4 or 5, characterized in that: The sealing pad (24) is a plastic pad.

7. The grinding and polishing head position detection mechanism according to claim 2, characterized in that: The number of the locking shafts (22) is three, and the three locking shafts (22) are distributed in a triangle.

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